Broadway Gold Mine
Silver Star, Montana
The Broadway Gold Mine is near Silver Star, Montana. Historically the site has been associated with the Silver Star Mining District which is now part of the Deerlodge National Forest. The Broadway Gold Mine was closed at the time of data entry with no known plans to re-open. Production size when active was considered to be small. Mine operations consist of surface and underground workings. There is one known shaft. Subsurface depth reaches a maximum of 198 meters (650 feet) and extends 610 meters (2,000 feet) in length. The ore mined is composed of cuprite and malachite with waste material consisting primarily of serpentine, pyrolusite and jasper. The ore body is irregularly shaped 60 meters (200 feet) in width. The host rock in this area is limestone. The Northern Rocky Mountains physiographic province of the Rocky Mountain System characterize the geomorphology of the surrounding area.
Additional textual information about a site or mine.
Formal or informal mining district names.
20-STAMP MILL AND CYANIDATION PLANT BUILT 1900, MILL BURNED DOWN AROUND 1903.; 100-120 TONS/ORE PER DAY WERE MILLED FOR CONCENTRATES IN 1949.
Workings at the site.
TWO SHAFTS, 400 AND 550 FEET DEEP, WITH LEVELS AT 75 175, 300, 350 AND 450 FEET. A 1100-FEET CROSSCUT CONNECTED WITH THE 300-FEET LEVEL. A WINZE FROM THE 450-FEET LEVEL ATTAINED 650 FEET OPEN PIT (1949).
Processes that concentrated or enriched the mineralization of the mine.
OXIDIZED ORE SHOOTS
Characteristics of the ore body.
Geological materials at the site.
Geologic structural features affecting or characterizing the site or mine.
Physiographic area where the resource is found.
Mineralogical and chemical alteration at or near the site, which may help to indicate the geographic extent of the geological processes producing the mine.
Controls on emplacement of ore such as faults or other structural features.
Other deposits in the same region.
Victoria Gold Mine
Broadway-Victoria Gold Mine
Hudson Gold Mine
Keystone Gold Mine
Keystone Gold Mine
Pollinger Gold Mine
Edgerton Silver Mine
Rhyolite Copper Mine
Green Campbell Group
* Mine bounds on map indicate the general area that a mine occupies. For an detailed map, refer to the overseeing BLM field office.
** The mine central point is based on an average of the mine's bounding box(es) and does not necessarily fall on the claim itself.
1 World-class significance is determined by total endowment of the contained commodity. This includes all past production and remaining reserves. Each commodity is considered separately and commodities cannot be combined to arrive at a significant size. The tonnage thresholds are from the mine model grade-tonnage studies. As of June 2008, many entries were classified as significant under less strict rules.
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MAIN ORE SHOOT DIPS 30 SW FOR FIRST 500-FEET, THEN 65SW FOR NEXT 150-FEET WIDTH RANGES FROM A FEW FEET TO 200 OR MORE. SMALLER SHOOTS EXTEND INTO GRANITE.